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Astrophysics: The heart of darkness
At the centre of every large galaxy lives a giant black hole that swallows gas or dust clouds that stray too close. As matter spirals inwards, it is compressed into an accretion disk. By the time it falls into the black hole, the matter is so hot that much of its mass is converted to energy, which emerges as heat, light and jets of high-energy particles. http://www.nature.com/polopoly_fs/7.14928.1389717382!/image/Quasar.jpg_gen/derivatives/landscape_630/Quasar.jpg
Processed using archived data from the Hubble Space Telescope. NASA/ESA/Kevin M. Gill Red: hlsp_heritage_hst_wfc3-ir_ngc2174_f160w_v1_drz_sci Green: hlsp_heritage_hst_wfc3-ir_ngc2174_f125w_v1_drz_sci Blue: hlsp_heritage_hst_wfc3-ir_ngc2174_f105w_v1_drz_sci
The Wizard Nebula NGC 7380 (also known as the Wizard Nebula) is an open cluster discovered by Caroline Herschel in 1787. William Herschel included his s... - COSMOGRAFO VELOZ - Google+